/Engine/Source/Runtime/Engine/Public/MaterialShared.h
FMaterialResourceProxyReader ( [FArchive](API\Runtime\Core\Serialization\FArchive) & Ar, [ERHIFeatureLevel::Type](API\Runtime\RHI\ERHIFeatureLevel__Type) FeatureLevel, [EMaterialQualityLevel::Type](API\Runtime\Engine\EMaterialQualityLevel__Type) QualityLevel )